can: flexcan: disable transceiver during system PM

During system PM, if no wakeup requirement, disable transceiver to
save power.

Fixes: 4de349e7 ("can: flexcan: fix resume function")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <frank.li@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20250314110145.899179-2-haibo.chen@nxp.com


[mkl: add newlines]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>